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2 of' Page 2 George's Service Project Name Borehole No. MW-107
<br />425.2 Project No. Date 7/1/98 Contractor V&W Drilling
<br />Field Geo/Eng M. Niemi Drilling Method Hollow Stem Auger
<br />Geological Tec nics Inc.
<br />///////,,,,,,,,,I.,/,/ / / / / / / / / / / / / / / / / / / ,,,,,,,,,,,,,,,,,,,,,, e e Log,,,,,,,,,,,,,,,,,,,,, Bor hol
<br />Area & County Corner of Durham Ferry Rd. and Hwy 33/ San Joaquin Co.
<br />Borehole Dia_elf
<br />Filter Pack
<br />Tot,
<br />Annular
<br />Depth_52L Tot. Casing
<br />45-43'Slot
<br />Depth 52' Casing Dia 2" Screened Interval 49.5-47'
<br />52-45' Seal Size 0.020" Grout 43-0' Water Depth +/-7'
<br />0-0,
<br />s_ +.
<br />Tido
<br />0,
<br />papw w
<br />o z
<br />— -- c _2
<br />—a,
<br />0
<br />v) >,
<br />Description
<br />Remarks
<br />OVM (ppm)
<br />— 1450 17 sw GRAVELY SAND—very fine to very coarse
<br />grained, loose. 0 50/2'=
<br />_
<br />_
<br />_
<br />—
<br />1457
<br />3
<br />4
<br />9
<br />— — --`
<br />_
<br />C
<br /> ,-, ,
<br />Gp SANDY GRAVEL—medium to very coarse
<br />grained, loose, slightly heaving. 0
<br />_
<br />_
<br />_
<br />_
<br />_
<br />e
<br />29
<br />35
<br />--
<br />—
<br />:= ._ ML SILT—(2.5Y5/6), firm.
<br />___
<br />7
<br />_ 1554
<br />9
<br />14
<br />50/3" - -000 0A
<br />u uggg g'.
<br />,
<br />GC CLAYEY SANDY GRAVEL—loose, angular
<br />gravels of chert and sandstone.
<br />—
<br />_
<br />_
<br />' .
<br />.
<br />— _
<br />— —
<br />— 1609
<br />---=
<br />-
<br />SC
<br />CL
<br />CLAYEY SAND—very fine to medium
<br />grained, some gravel, 52-52'3".
<br />SANDY CLAY—very fine grained, firm,
<br />52'3"-53.5' .
<br />_
<br />—
<br />—
<br />_
<br />_
<br />_
<br />_
<br />GRAVEL
<br />WA Annular Seal n Grout Notes: SAND ----- CLAY
<br />Sample Submitted to Laboratory SILT oo°
<br />3
<br />3
<br />40
<br />45
<br />50
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